linux-kernel - Re: [PATCH] sched/core: Report failed rt migrations to non-root cgroup without rt bandwidth under RT_GROUP

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Message-ID: <ttgdkklsa3dsni2i2yy2vf4qmu7vfwlwnkl3qpprikgb62li7u@5vcwgd3vgt46>
Date: Tue, 16 Sep 2025 13:23:36 -0400
From: Aaron Tomlin <atomlin@...mlin.com>
To: Phil Auld <pauld@...hat.com>
Cc: Michal Koutný <mkoutny@...e.com>, mingo@...hat.com, 
	peterz@...radead.org, juri.lelli@...hat.com, vincent.guittot@...aro.org, 
	dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de, 
	vschneid@...hat.com, shashank.mahadasyam@...y.com, longman@...hat.com, tj@...nel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/core: Report failed rt migrations to non-root
 cgroup without rt bandwidth under RT_GROUP_SCHED

On Tue, Sep 16, 2025 at 01:07:35PM -0400, Phil Auld wrote:
>  CONFIG_RT_GROUP_SCHED is not enabled in RHEL9 and later.  It was on in
>  RHEL8 which also defaulted to cgroupv1.

Hi Phil,

Sorry about that! It is only enabled on RHEL 8. I can see under
redhat/configs/kernel-5.14.0-x86_64.config it is indeed disabled.


Kind regards,
-- 
Aaron Tomlin